Cessna 441 Conquest, G-USAR

Summary:

The pilot planned to fly an ILS approach with the autopilot engaged. The aircraft was given radar vectors to intercept the final approach course and the pilot reported to ATC that he was established on the localiser. The ATC controller then noticed that the aircraft was flying erratically, deviating from the expected track and altitude. He instructed the pilot to turn onto a specific heading and to climb to 2,500 ft. The pilot followed the controller’s instructions and subsequently accepted a second radar vectored ILS approach, which was flown successfully.